Influence of age and morphological characteristics on whole body, lumbar spine, femoral neck and 1/3 radius bone mineral apparent density in a group of Lebanese adolescent boys

Abstract

The purpose of this study was to analyse the relationships between age, morphological characteristics (weight, height, body mass index (BMI), fat and lean mass), daily calcium intake (DCI), physical activity and bone mineral apparent density (BMAD) of the whole body (WB), lumbar spine (L2-L4), femoral neck (FN) and 1/3 radius in a group of Lebanese adolescent boys. This study included 60 Lebanese adolescent (16.8 ± 2.1 years old) boys. Body composition and bone mineral density (BMD) were assessed by dual-energy X-ray absorptiometry (DXA). BMAD values of the WB, L2-L4, FN and 1/3 radius were calculated. Physical activity and DCI were assessed using questionnaires. Age was positively related to WB, L2-L4 and 1/3 radius BMD and BMAD. Weight, lean mass and BMI were positively related to WB, L2-L4, FN and 1/3 radius BMD. Moreover, weight, lean mass and BMI were positively associated with L2-L4 and FN BMAD but not with BMAD of the WB and the 1/3 radius, while fat mass percentage was negatively associated with WB BMAD. In conclusion, this study shows that weight, lean mass and BMI are positively associated with BMAD of the weight-bearing bones (L2-L4 and FN) but not with BMAD of the WB and the 1/3 radius in adolescent boys.

Adiposity and bone health in Spanish adolescents. The HELENA study

“…Some studies have analyzed the association of FM on bone mass, obtaining contradictory results [13][14][15][16][17]42], probably due to adjustment or not for key confounders. Some studies have reported positive associations between FM and bone mass in children and adolescents, after controlling for age, Table 3 Multiple linear regression analysis of BMC (in grams) and BMD (in grams per square centimeter) in Spanish adolescents participating in the HELENA study as regards to lean mass (n=330)…”

“…Some studies have suggested that FM is positively related to bone mass in girls [13,14], which has been longitudinally confirmed [15,16]; whereas, others have observed that FM is negatively associated with bone mineral density (BMD) in boys [13,17].…”

The Role of Overweight and Obesity on Bone Health in Korean Adolescents with a Focus on Lean and Fat Mass

“…It remains controversial whether overweight/obesity during childhood is beneficial or harmful for the acquirement of bone mass ( 3 4 5 ). Individuals with similar body mass index (BMI) were shown to have differences in bone density depending on their proportions of fat mass (FM) and lean mass (LM) ( 6 ). While the beneficial effect of LM on bone health is well understood, it remains unclear whether FM has a beneficial or harmful effect on bone mass and density; moreover, different results have been reported according to sex ( 7 ).…”

La Qualité Du Sommeil Est Un Déterminant De La Densité Minérale Osseuse De La Hanche Chez Un Groupe De Jeunes Hommes Libanais

“…Le poids et la taille ont été mesurés dans un centre hospitalier à l'aide d'une balance électronique (Taurus, précision : 0,1 kg) et d'une toise (Seca, précision : 0,1 cm). L'indice de masse corporelle (IMC) a été calculé en divisant le poids corporel par la taille au carré (kg/m 2 ) [11][12][13][14].…”

“…Toutes ces mesures ont été réalisées par le même technicien et sur la même machine dans le même centre hospitalier. Dans ce centre, le coefficient de variation pour les mesures de DMO de la hanche entière était inférieur à 1% [11][12][13][14].…”